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Zeiss Planar

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Title: Zeiss Planar  
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Subject: Camera lens, Tessar, Richard Avedon, Contax, Large format lens, Double-Gauss lens, Zeiss Sonnar, Zeiss Vario-Sonnar, Contax G, Paul Rudolph (physicist)
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Zeiss Planar

This article is about the Zeiss lens. For other uses, see Planar (disambiguation).
Zeiss Planar
Introduced in: 1896
Author: Paul Rudolph
Construction: 6 elements in 4 groups
Aperture: f/4.5

The Zeiss Planar is a photographic lens designed by Paul Rudolph at Carl Zeiss in 1896. Rudolph's original was a six-element symmetrical design.

While very sharp, the lens suffered from flare due to its many air-to-glass surfaces. Before the introduction of lens coating technology the four-element Tessar, with slightly inferior image quality, was preferred due to its better contrast. In the 1950s, when effective anti-reflective lens coatings became available, coated Planars were produced with much-improved flare. These lenses used the Zeiss T coating system, which had been invented by Olexander Smakula in 1935.[1] They performed very well as normal and medium-long focus lenses for small and medium format cameras. One of the most notable Planar lenses is the high-speed f/2.0/110 mm lens for the 2000- and 200-series medium format Hasselblad cameras.

See also

Further reading

References

  • Carl Zeiss lenses [1]
  • Carl Zeiss SLR Lenses - Planar T* 1,4/50 [2]
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